Function ResizeWindow

Source/utils/display.cpp:499–540

}

void ResizeWindow()
{
	if (ghMainWnd == nullptr)
		return;

	Size windowSize = GetPreferredWindowSize();

#ifdef USE_SDL1
	SetVideoModeToPrimary(*sgOptions.Graphics.fullscreen, windowSize.width, windowSize.height);
#else
	// For "true fullscreen" windows, the window resizes automatically based on the display mode
	bool trueFullscreen = *sgOptions.Graphics.fullscreen && !*sgOptions.Graphics.upscale;
	if (trueFullscreen) {
		SDL_DisplayMode displayMode = GetNearestDisplayMode(windowSize);
		if (SDL_SetWindowDisplayMode(ghMainWnd, &displayMode) != 0)
			ErrSdl();
	}

	// Handle switching between "fake fullscreen" and "true fullscreen" when upscale is toggled
	bool upscaleChanged = *sgOptions.Graphics.upscale != (renderer != nullptr);
	if (upscaleChanged && *sgOptions.Graphics.fullscreen) {
		Uint32 flags = *sgOptions.Graphics.upscale ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_FULLSCREEN;
		if (SDL_SetWindowFullscreen(ghMainWnd, flags) != 0)
			ErrSdl();
		if (!*sgOptions.Graphics.fullscreen)
			SDL_RestoreWindow(ghMainWnd); // Avoid window being maximized before resizing
	}

	if (!trueFullscreen)
		SDL_SetWindowSize(ghMainWnd, windowSize.width, windowSize.height);
#endif

	ReinitializeRenderer();

#ifndef USE_SDL1
	SDL_SetWindowResizable(ghMainWnd, renderer != nullptr ? SDL_TRUE : SDL_FALSE);
	InitializeVirtualGamepad();
#endif

	CreateBackBuffer();
	RedrawEverything();
}

SDL_Surface *GetOutputSurface()
{